Custom Calendar Background

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Custom Calendar Background",
    "version": "2.0.11",
    "description": "Adds background images to Google Calendar",
    "icons": {
        "128": "icon128.png"
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/calendar.google.com\/calendar\/*"
            ],
            "js": [
                "content.js"
            ],
            "css": [
                "style.css"
            ]
        }
    ],
    "background": {
        "service_worker": "background.js"
    },
    "permissions": [
        "storage",
        "identity",
        "identity.email"
    ],
    "options_page": "options.html",
    "web_accessible_resources": [
        {
            "resources": [
                "options.html"
            ],
            "matches": [
                "<all_urls>"
            ]
        }
    ],
    "content_security_policy": []
}